INSTALLATION MANUAL OPERATION MANUAL
KANNAD 406 AP-H
PAGE 103
JUL 24/2013
3. Working mode information
The KANNAD 406 AP-H has 4 different modes:
• Off.
• Self-test (temporary mode).
• Armed (standby mode to enable automatic activation by the shock sensor
or by the remote control panel).
• On (transmission).
Transmission is effective if the beacon is activated (either manually on the ELT
control panel, remotely by the "ON" switch on the remote control panel or
automatically by the shock sensor).
A. Off
The ELT is off when the switch is in position "OFF". No part of the ELT is
energized. This mode must only be selected when the ELT is removed from
the aircraft or parked for a long period or for maintenance.
B. Self-Test
The self-test mode is a temporary mode (max duration 5 sec) in which the ELT
checks the main characteristics of the transmitter (Battery voltage,
Programming) and enables digital communication with a programming and test
equipment.
This mode is selected:
• when switching from "OFF" to "ARM";
• when switching to "RESET / TEST" on the Remote Control Panel
(provided that the switch of the ELT is in the "ARM" position);
• when switching to "ON" prior to transmission.
The buzzer operates during the self-test procedure.
After about 3 seconds, the test result is displayed on the visual indicator as
follows:
• One long flash indicates valid test.
• A series of short flashes indicates false test result.
The number of flashes indicates the type of failure:
• 3 + 1 = LOW BATTERY VOLTAGE.
• 3 + 2 = LOW TRANSMISSION POWER.
• 3 + 3 = FAULTY VCO LOCKING (FAULTY FREQUENCY).
• 3 + 4 = NO IDENTIFICATION PROGRAMMED.
It is recommended to test the ELT regularly in order to detect any possible
failure (
Refer to A. Periodicity, page 301
The number of self-tests carried out is recorded. This information is available
when the ELT is connected to a programming and test equipment (PR600).
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